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Don't mining pools concentrate on mining new blocks, as it's more profitable? Can't we have a mining pool with old ASIC/GPU miner that would do ONLY confirmations, and would do all confirmations, even those with minimal fee?

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Transactions are confirmed through the mining of new blocks. There is no other way to confirm transactions, and it's the purpose of block-mining.

Ah, ok thanks. SO the only way to fix it is by deploying new miners.

No that wouldn't actually fix it. There is a limit to how many transactions can be processed regardless of how many miners are running. Adding more miners doesn't actually increase capacity just the difficulty.

If you deploy more miners the average difficult to mine each block will increase (as for the bitcoin rules) so you are back to square one.

Yup, I expected this.

The way to fix this is increasing the size of the blocks, which is trivial from a technical standpoint, but it has some implications that the current majority of miners are not willing to accept.

The new blocks are the incentive for the confirmations to be accomplished. There are no "types" of mining, afaik.

> The new blocks are the incentive for the confirmations to be accomplished.

Not quite. The new blocks are the confirmations.

> There are no "types" of mining, afaik.

Right.

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